Irregular periods normal??

I night weaned my son at almost ten months, it totally brought on my period...

But back to back travel, teething, sickness and I started nursing all night again... now that that’s all over we’ve been sleep training again and I’m 5 days late... but it’s next to zero chance I could be pregnant as my husband and I don’t have sex hardly... due to my son waking all night..

But it does freak me out just not starting my period.. I feel like I messed with it though stopping so much nursing abruptly.. I’m wondering if starting over the night weening will do it again or it will be super irregular...... is it normal to have irregular cycles after bf for so long?